Why is Inventory Valuation summary Report not matching with actual stock value?

Why is Inventory Valuation summary Report not matching with actual stock value?

Thanks for your support. For example we had the stock value on 1st of the month as ₹100000. On the 5th of the same month we had some other value as ₹95000 even if haven't made any sale or purchase transaction in the meantime. This shows that the Inventory valuation summary is incorrect. Please help us with this issue.